CN118359342A - A pre-treatment device and method for underground saline-alkali agricultural water - Google Patents
A pre-treatment device and method for underground saline-alkali agricultural water Download PDFInfo
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- CN118359342A CN118359342A CN202410584624.6A CN202410584624A CN118359342A CN 118359342 A CN118359342 A CN 118359342A CN 202410584624 A CN202410584624 A CN 202410584624A CN 118359342 A CN118359342 A CN 118359342A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- Engineering & Computer Science (AREA)
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- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
本发明涉及应用于地下水处理领域的一种地下盐碱农用水前置处理装置及方法，利用收紧皮筋、隔离杆和电动伸缩杆以及折叠滤罩，能够对絮凝池内部的絮凝物进行分批次的分离收集，如此可避免后期搅拌混合促进絮凝操作对已沉降絮凝物的打散处理，还能够扩大后续絮凝池中上清液的液层深度，同时，还采用嵌入式集成工业设计，将多重过滤处理和除菌处理等前端预处理模块与水离子脱盐膜进行整合，形成一款占地面积小、通量符合农业园区的单元集成模块化设备，并且可以通过“头部+子系统”串联进行模块化净化，满足不同农业园区的供水需求。
The present invention relates to an underground saline-alkali agricultural water pretreatment device and method applied to the field of groundwater treatment. By tightening rubber bands, isolation rods, electric telescopic rods and folded filter covers, flocculants in a flocculation tank can be separated and collected in batches, thereby avoiding the need for subsequent stirring and mixing to promote the flocculation operation to break up the settled flocculants, and can also expand the liquid layer depth of the supernatant in the subsequent flocculation tank. At the same time, an embedded integrated industrial design is adopted to integrate front-end pretreatment modules such as multiple filtration treatments and sterilization treatments with a water ion desalination membrane to form a unit integrated modular device with a small footprint and a flux that meets the requirements of agricultural parks. Modular purification can also be performed through the series connection of "head + subsystem" to meet the water supply needs of different agricultural parks.
Description
Technical Field
The invention relates to a pre-treatment device and method for underground saline-alkali agricultural water, in particular to a pre-treatment device and method for underground saline-alkali agricultural water, which are applied to the field of underground water treatment.
Background
The shallow groundwater which can be developed and utilized in most agricultural production areas in China is generally poor in water quality, and contains a large amount of organic matters, colloid, sediment, suspended sand, microorganisms and the like, wherein the sediment, suspended sand and the like are easy to block irrigation pipelines and fertilizer application devices, and are important limiting factors for popularization of agricultural precise irrigation. And pollutants such as organic matters, colloid, microorganisms and the like enter the root system environment of crops along with irrigation, and can also adversely affect the growth of the crops and the quality of fruits. Meanwhile, for areas with serious salinization of underground water, the existence of the substances also limits the application of the saline-alkali water desalination technology, can accelerate the pollution of the nano desalination membrane and causes great economic loss.
The specification of Chinese patent No. 202311226810.4 discloses a flocculation device for sewage treatment. The technical problems to be solved are as follows: in the flocculation process of sewage, the flocculant and the sewage are unevenly mixed, so that the flocculation effect of the sewage is poor, and meanwhile, most of the flocculating agents and the sewage are stirred in a mode of evenly mixing, flocculates which are flocculated are scattered again, and the flocculation effect of the sewage is reduced. The technical implementation scheme of the invention is as follows: a flocculation device for sewage treatment comprises a bottom frame, a mounting box and the like; the chassis is provided with a mounting box. The invention realizes the detection of the depth of the sewage in the flocculation tank by the detector, so that the upper liquid level of the sewage in the flocculation tank is always lower than the upper surface of the installation tank, the overflow of the sewage is avoided, the flocculant in the flocculation tank and the sewage are enabled to flow in a clockwise vortex manner by the mixer, the flocculant and impurities in the sewage are fully contacted and mixed, and the flocculation effect of the sewage is effectively improved.
The existing flocculation equipment is often focused on the mixing of a flocculating agent and sewage during flocculation, but objects which are flocculated and settled firstly are accumulated at the bottom of a flocculation tank during flocculation, and the objects which are flocculated and settled originally are dispersed along with the subsequent stirring and mixing to strengthen the operation of mixing the flocculating agent and the sewage, so that the flocculation result is influenced.
Disclosure of Invention
Aiming at the prior art, the invention aims to solve the technical problem of realizing batch discharge of flocculate in the sewage flocculation treatment process so as to ensure that the phenomenon that flocculated sediment is broken up during subsequent mixing and stirring and ensure flocculation quality.
In order to solve the problems, the invention provides an underground saline-alkali agricultural water pre-treatment device, which comprises a flocculation tank, wherein symmetrically arranged stirring mixing units are arranged on the outer wall of the flocculation tank, vertical rods are arranged at the middle positions of the tops of two sides of the flocculation tank, a driving motor is arranged on the surface of one vertical rod, a ball screw is arranged between the two vertical rods, one end of the ball screw is connected with the output end of the driving motor, a movable seat is sleeved on the surface screw thread of the ball screw, an extension hanging rod is connected with the bottom of the movable seat, the bottom of the extension hanging rod is connected with a frame, the frame is in sliding contact with the inner wall of the flocculation tank, a plurality of tightening rubber bands which are equidistantly arranged are sleeved on the surface of the frame, an electric telescopic rod is arranged on the surface of the extension hanging rod, a vertical isolation rod is connected with a folding filter cover, the diameter of the tightening rubber bands is smaller than one tenth of the cross section size of the folding filter cover, the bottom surface of the frame is in contact with the inner bottom wall of the flocculation tank, the folding filter cover is made of filter cloth, the mesh number of the filter cloth is not smaller than 300 mesh, the tail end of the folding filter cover is connected with a frame plate of an elastic material, and the folding filter cover is designed into a wave shape;
The bottom surface mounting of spacer rod has the lug of arranging from top to bottom, and the difference in height between two lugs is greater than the ring diameter value of tightening up the rubber band, and the below lug flushes with the bottom surface of spacer rod, and the spacer rod is extending structure, and the spacer rod is in the bottom under the natural state flush with the surface of frame.
In the above-mentioned saline and alkaline agricultural water pretreatment device, can carry out the separation collection of batch to the inside flocculation thing of flocculation basin, so can avoid later stage stirring to mix and promote the flocculation operation to the processing of breaking up of the flocculation thing that has subsided, can also enlarge the liquid layer degree of depth of supernatant in follow-up flocculation basin.
As a further improvement of the application, the projection of the power end of the electric telescopic rod in the vertical direction is positioned in the top surface of the frame when the power end is in the storage state, the bottom part of the isolating rod is in arc-shaped design, and the bottom part of the isolating rod is positioned in the middle of the two rightmost tightening rubber bands in the initial state.
As a further improvement of the application, the stirring and mixing unit comprises supporting frames arranged on the outer walls of the two sides of the flocculation tank, the two supporting frames are positioned at the front end and the rear end of the driving motor, the top of each supporting frame is provided with a lifting cylinder electrically connected with the driving motor, the output end of each lifting cylinder is connected with a platform, the bottom of each platform is provided with a plurality of stirring rods through bearings, the stirring rods at the bottom of each platform are in transmission connection through a conveying belt, the top of each platform is provided with a stirring motor, and the output end of each stirring motor is connected with the end part of one stirring rod.
As a further improvement of the application, the stirring blade rods are arranged on the surfaces of the stirring rods, and the shortest distance between the two stirring blade rods on the same axis is larger than the diameter value of the extension hanging rod.
As a further improvement of the application, a displacement sensor is arranged in the movable seat and is electrically connected with the electric telescopic rod.
As a further improvement of the application, the isolating rod comprises a fixed rod body and a movable rod body movably sleeved on the outer side of the fixed rod body, the fixed rod body is connected with the power end of the electric telescopic rod, the bottom end of the fixed rod body is connected with an electromagnet, the bottom of the movable rod body is connected with an arc-shaped counterweight magnetic block in a penetrating way, and the counterweight magnetic block and the electromagnet are attracted mutually.
As a further improvement of the application, the pretreatment method of the underground saline-alkali agricultural water comprises the following working steps:
S1, carrying out lamination rough filtration, and removing particles with the particle size of more than 50 mu m, such as sediment in water, by using 200 mesh lamination;
S2, flocculation treatment, namely mixing a flocculant into the raw water subjected to the S1 treatment in real time through a proportion pump, so that colloid in the raw water is fully flocculated in a flocculation tank, the sedimentation time is ensured to be more than 2 hours, and meanwhile, a nano micro-bubble ozone machine is utilized to sterilize supernatant fluid, so that microorganism reproduction is reduced;
s3, transferring the supernatant subjected to flocculation sterilization in the step S2 to a secondary sedimentation tank, and thoroughly precipitating residual flocculate after more than 2 hours of sedimentation time;
s4, sequentially passing the supernatant fluid in the secondary sedimentation tank through quartz sand and activated carbon by a lifting pump, further removing particles in water, and adsorbing colored and flavored organic matters;
S5, the water body treated by the S4 sequentially enters a PP cotton filter core and a parke filter core, impurities with the diameter of more than 1 mu are removed completely, then the groundwater is desalted, and the desalted water body is transferred into a reservoir to be stored as agricultural water to wait for use.
As a further improvement of the application, the following working steps are included in S2:
s21, firstly, throwing a flocculating agent into a flocculation tank, and then starting a lifting cylinder and a stirring motor to drive a stirring rod to descend into the flocculation tank and mix the flocculating agent in the flocculation tank with a water body;
S22, after stirring for a set period of time, lifting the stirring rod by using a lifting cylinder, and closing the stirring motor, standing for a set period of time at the moment, and waiting for flocculation sedimentation;
s23, after a specified time period, flocs exist on the bottom wall of the flocculation tank, at the moment, a driving motor is started at a set rotating speed to drive a movable seat to slowly move in a direction deviating from the driving motor, then a frame and a folding filter cover are driven to horizontally move in the flocculation tank, and the flocs passing through the frame and the folding filter cover are stored in the folding filter cover;
S24, after the movable seat moves to one end of the ball screw, which is far away from the driving motor, the driving motor is closed, the electric telescopic rod is started, the isolating rod is driven to move towards the direction close to the driving motor, the rightmost tightening rubber band is driven to be separated from the surface of the frame, and the folding filter cover is retracted and locked under the self elastic action;
s25, under the action of an electric telescopic rod, driving the tightening rubber band to be close to one end of the folding filter cover, which is far away from the frame, and tightening the end part of the flocculate stored in the folding filter cover;
s26, the electric telescopic rod is retracted later, the bottom end of the isolating rod is located between the two tightening rubber bands at the rightmost end again, the driving motor is restarted, the frame and the folding filter cover are driven to return to one end, close to the driving motor, inside the flocculation tank, and flocculate collection of the next round is waited.
As a further improvement of the application, the inside of the extension hanging rod is embedded with servo motors which are symmetrically arranged, the output end of each servo motor is connected with a linkage rod, the tail end of the linkage rod is connected with the top of the frame through a connecting plate, and the servo motors are electrically connected with the driving motor and the electric telescopic rod.
In summary, the application utilizes the tightening rubber band, the isolating rod, the electric telescopic rod and the folding filter cover to separate and collect flocculates in the flocculation tank in batches, so that the later stirring and mixing promotion flocculation operation can be avoided to break up the settled flocculates, the liquid layer depth of supernatant in the subsequent flocculation tank can be enlarged, meanwhile, the embedded integrated industrial design is adopted, the front-end pretreatment modules such as multiple filtration treatment, sterilization treatment and the like are integrated with the water ion desalination membrane, so that a unit integrated modularized device with small occupied area and flux meeting the requirements of water supply of different agricultural parks is formed, and modular purification can be carried out through 'head+subsystem' series connection, thereby meeting the requirements of water supply of different agricultural parks.
Drawings
Fig. 1 is a general construction diagram of a first and second embodiment of the present application;
FIG. 2 is a block diagram of a stirring and mixing unit according to a first and second embodiment of the present application;
FIG. 3 is an interior view of a flocculation basin in accordance with a first embodiment of the present application;
FIG. 4 is an enlarged view of the application at A in FIG. 3;
FIG. 5 is a plan view of a spacer rod according to a first and second embodiment of the present application;
FIG. 6 is a view showing the state of the movable seat of the first and second embodiments of the present application collecting flocculate near the inner wall of one side of the flocculation tank;
FIG. 7 is a view showing the spacer bar of the first and second embodiments of the present application starting to assist in tightening the rubber band away from the frame surface;
FIG. 8 is a schematic view of the overall process of tightening the cords off the frame to the end of the pleated cover of the first and second embodiments of the application;
FIG. 9 is a schematic view of a linkage rod according to a second embodiment of the present application;
FIG. 10 is a diagram showing the operation of the linkage rod according to the second embodiment of the present application;
FIG. 11 is a view of the end flocs entering the pleated filter cover according to a second embodiment of the present application;
FIG. 12 is a process flow diagram of a first embodiment of the present application;
fig. 13 is a structural installation schematic diagram of a third embodiment of the present application;
Fig. 14 is a schematic view of an electromagnetic block according to a third embodiment of the present application in an activated state.
The reference numerals in the figures illustrate:
1. A flocculation tank; 2. a driving motor; 21. a ball screw; 22. extending a hanging rod; 3. a support frame; 4. a stirring motor; 5. a lifting cylinder; 6. a stirring rod; 7. a spacer rod; 8. an electric telescopic rod; 9. folding the filter cover; 10. a frame; 11. tightening the rubber band; 12. and a linkage rod.
Detailed Description
Two embodiments of the present application will be described in detail with reference to the accompanying drawings.
First embodiment:
Fig. 1 and fig. 3-4 show a pre-treatment device for underground saline-alkali agricultural water, which comprises a flocculation tank 1, wherein symmetrically arranged stirring mixing units are arranged on the outer wall of the flocculation tank 1, vertical rods are arranged at the middle positions of the tops of two sides of the flocculation tank 1, a driving motor 2 is arranged on the surface of one vertical rod, a ball screw 21 is arranged between the two vertical rods, one end of the ball screw 21 is connected with the output end of the driving motor 2, a movable seat is sleeved on the surface screw thread of the ball screw 21, an extension hanging rod 22 is connected with the bottom of the movable seat, the bottom of the extension hanging rod 22 is connected with a frame 10, the frame 10 is in sliding contact with the inner wall of the flocculation tank 1, a plurality of tightening rubber bands 11 which are equidistantly arranged are sleeved on the surface of the extension hanging rod 22, an electric telescopic rod 8 is arranged on the surface of the extension hanging rod 22, a partition rod 7 which is vertically arranged is connected with the output end of the electric telescopic rod 8, one side surface of the frame 10 is connected with a folding filter cover 9, the diameter of the tightening rubber band 11 is smaller than one of the cross section size of the folding filter cover 9, the bottom surface of the frame 10 is in contact with the inner bottom wall of the flocculation tank 1, the folding filter cover 9 is in order of 300 meshes, and the filter cloth is made of a wave-shaped filter cloth which is not smaller than 300 mesh filter cloth, and is made of an elastic filter cloth, and the filter cloth is designed into a wave-shaped filter cloth.
Specifically, when the corresponding flocs are subjected to batch isolation treatment, the driving motor 2 is required to be started firstly, the movable seat is driven to slowly move towards one end of the ball screw 21, the frame 10 and the folding filter cover 9 are driven to synchronously move, the flocs deposited on the inner bottom wall of the flocculation basin 1 are stored, the flocs are transferred into the folding filter cover 9, after the frame 10 moves to one side of the flocculation basin 1, which is far away from the driving motor 2 (as shown in fig. 6), the driving motor 2 is closed, the electric telescopic rod 8 is started, the isolation rod 7 is driven to move the rightmost tightening rubber band 11 sleeved on the surface of the frame 10 towards the direction close to the folding filter cover 9 (as shown in fig. 7), the tightening rubber band 11 is in a stretching state when being sleeved on the surface of the frame 10, the surface of the folding filter cover 9 can be restored to an original small diameter state under the self-elastic action after the surface of the frame 10 is separated, then the electric telescopic rod 8 is continuously extended to the inner liquid level of the flocculation basin 1, the isolation rod 7 is driven to continuously push the tightening rubber band 11 along the direction of the folding filter cover 9, the electric telescopic rod 7 is pushed to move towards the direction close to the inner side of the flocculation basin 1, the inner side of the flocculation basin 1 is pushed to the inner side of the electric telescopic rod 8, the tightening rubber band is continuously pushed to the inner side of the flocculation filter cover is in a small diameter state, and the end is kept in a small diameter state when the electric telescopic rod is pushed to be pushed to the inner in the inner side of the flocculation rod 9, and the flocculation case is kept in a small diameter state, and the flocculation state is kept in the inner state, and the flocculation state is kept in the flocculation state, and the flocculation is kept in the flocculation is kept inside.
The projection of the power end of the electric telescopic rod 8 in the vertical direction is positioned in the top surface of the frame 10 when the power end is in a storage state, the bottom part of the isolation rod 7 is in an arc-shaped design, and the bottom part of the isolation rod 7 is positioned in the middle of two tightening rubber bands 11 at the rightmost end in an initial state;
the frame plate can be changed into a bent shape after the tightening of the rubber band 11 to shrink the folding filter cover 9, and the cross section size of the bent frame plate is larger than the size of the tightening of the rubber band 11, so that the phenomenon that the tightening of the rubber band 11 is driven by water waves to separate from the surface of the folding filter cover 9 during movement can be avoided.
Fig. 5 shows that the bottom surface of the spacer 7 is provided with the protrusions arranged up and down, and the difference in height between the two protrusions is larger than the ring diameter value of the tightening rubber band 11, the lower protrusions are flush with the bottom surface of the spacer 7, the spacer 7 is of a telescopic structure, and the bottom of the spacer 7 in a natural state is flush with the surface of the frame 10.
Specifically, after the isolation rod 7 pushes the tightening rubber band 11 to leave the surface of the frame 10 and then approaches the driving motor 2, a certain constraint connection effect can be achieved on the tightening rubber band 11 by means of two protruding blocks, so that the isolation rod 7 can drive the tightening rubber band 11 to synchronously move, after the end of the folding filter cover 9, which is close to the driving motor 2, is reached, the isolation rod 7 moves reversely, and meanwhile, the tightening rubber band 11 can be separated from the isolation rod 7 through a gap between the two protruding blocks, and further tightening isolation operation of the folding filter cover 9 is achieved;
In the process that the isolation rod 7 is next to the frame 10, the bottom of the isolation rod 7 is contacted with the rightmost tightening rubber band 11 firstly, the isolation rod 7 is forced to move upwards to be in a contracted state under the contraction structure of the isolation rod 7 and the arc design of the bottom, the isolation rod is smoothly moved to the middle of the rightmost two tightening rubber bands 11 under the assistance of the arc structure, and the isolation rod naturally falls down and stretches under the action of dead weight, so that the bottom of the arc structure is flush with the surface of the frame 10.
Fig. 2 shows that the stirring mixing unit comprises a supporting frame 3 arranged on the outer walls of two sides of a flocculation tank 1, two supporting frames 3 are positioned at the front end and the rear end of a driving motor 2, a lifting cylinder 5 electrically connected with the driving motor 2 is arranged at the top of the supporting frame 3, the output end of the lifting cylinder 5 is connected with a platform, a plurality of stirring rods 6 are arranged at the bottom of the platform through bearings, the stirring rods 6 at the bottom of each platform are connected through transmission belts, a stirring motor 4 is arranged at the top of the platform, and the output end of the stirring motor 4 is connected with the end part of one stirring rod 6.
The stirring blade rods are arranged on the surface of the stirring rod 6, and the shortest distance between the two stirring blade rods on the same axis is larger than the diameter value of the extension hanging rod 22.
Specifically, during stirring and mixing, the lifting air cylinder 5 can drive the stirring rod 6 to sink into the flocculation tank 1, and corresponding mixing operation is realized under the drive of the stirring motor 4, so that the mixing of the flocculant and the water body in the flocculation tank 1 is promoted, and flocculation is promoted;
When the flocculate is required to be collected, the stirring rod 6 can be lifted to be above the liquid level of the flocculation tank 1 under the action of the lifting cylinder 5, so that interference in the flocculate collecting process is avoided;
The gap between the stirring blade bars is larger than the diameter of the extension hanging bar 22, so that the stirring bar 6 is not interfered by the extension hanging bar 22 even when the stirring bar is stirred and mixed in the flocculation tank 1.
The displacement sensor is arranged in the movable seat and is electrically connected with the electric telescopic rod 8.
Specifically, the displacement sensor can detect the moving distance of the moving seat, and then after the moving seat reaches one end of the flocculation basin 1, which is away from the driving motor 2, a signal is sent to the electric telescopic rod 8, so that the tightening rubber band 11 is separated from the surface of the frame 10.
FIG. 12 shows that the pretreatment method for the underground saline-alkali agricultural water comprises the following working steps:
S1, carrying out lamination rough filtration, and removing particles with the particle size of more than 50 mu m, such as sediment in water, by using 200 mesh lamination;
S2, flocculation treatment, namely mixing a flocculant into the raw water subjected to the S1 treatment in real time through a proportion pump, so that colloid in the raw water is fully flocculated in a flocculation tank 1, the sedimentation time is ensured to be more than 2 hours, and meanwhile, a nano micro-bubble ozone machine is utilized to sterilize supernatant fluid, so that microorganism reproduction is reduced;
s3, transferring the supernatant subjected to flocculation sterilization in the step S2 to a secondary sedimentation tank, and thoroughly precipitating residual flocculate after more than 2 hours of sedimentation time;
s4, sequentially passing the supernatant fluid in the secondary sedimentation tank through quartz sand and activated carbon by a lifting pump, further removing particles in water, and adsorbing colored and flavored organic matters;
S5, the water body treated by the S4 sequentially enters a PP cotton filter core and a parke filter core, impurities with the diameter of more than 1 mu are removed completely, then the groundwater is desalted, and the desalted water body is transferred into a reservoir to be stored as agricultural water to wait for use.
S2, the following working steps are included:
S21, firstly, throwing a flocculating agent into the flocculation tank 1, and then starting a lifting cylinder 5 and a stirring motor 4 to drive a stirring rod 6 to descend into the flocculation tank 1 and mix the flocculating agent in the flocculation tank 1 with a water body;
s22, after stirring for a set period of time, lifting the stirring rod 6 by using the lifting cylinder 5, and closing the stirring motor 4, standing for a set period of time at the moment, and waiting for flocculation sedimentation;
s23, after a specified time period, flocs exist on the inner bottom wall of the flocculation tank 1, at the moment, the driving motor 2 is started at a set rotating speed, the moving seat is driven to slowly move in the direction deviating from the driving motor 2, then the frame 10 and the folding filter cover 9 are driven to horizontally move in the flocculation tank 1, and the flocs passing through are stored in the folding filter cover 9;
s24, after the movable seat moves to one end of the ball screw 21, which is away from the driving motor 2, the driving motor 2 is closed, the electric telescopic rod 8 is started, the isolation rod 7 is driven to move towards the direction close to the driving motor 2, the rightmost tightening rubber band 11 is driven to be separated from the surface of the frame 10, and the folding filter cover 9 is retracted and locked under the self elastic action;
s25, under the action of the electric telescopic rod 8, driving the tightening rubber band 11 to be close to one end of the folding filter cover 9, which is far away from the frame 10, and tightening the end of the flocculate stored in the folding filter cover 9;
S26, the electric telescopic rod 8 is retracted later, the bottom end of the isolation rod 7 is located between the two tightening rubber bands 11 at the rightmost end again, the driving motor 2 is restarted, the frame 10 and the folding filter cover 9 are driven to return to one end, close to the driving motor 2, inside the flocculation basin 1, and the flocculation collection of the next round is waited.
Second embodiment:
Fig. 9-11 show that the inside of the extension hanging rod 22 is embedded with symmetrically arranged servo motors, the output end of each servo motor is connected with a linkage rod 12, the tail end of the linkage rod 12 is connected with the top of the frame 10 through a connecting plate, and the servo motors are electrically connected with the driving motor 2 and the electric telescopic rod 8.
Specifically, when the frame 10 is close to one end of the flocculation basin 1, which is away from the driving motor 2 (at this time, a certain interval is reserved between the frame 10 and the inner wall of the flocculation basin 1, which is away from the driving motor 2, and the interval is used for vacating the space, so that the subsequent frame 10 is convenient to deflect by a small margin), the servo motor is started to drive the linkage rod 12 to deflect by a certain margin, so that the frame 10 synchronously deflects and the bottom of the frame 10 just contacts with the inner wall of the flocculation basin 1, which is away from the driving motor 2, when the frame 10 deflects, the end of the folding filter cover 9, which is originally horizontally placed, is close to the frame 10, is bent, so that the flocculate, which is horizontally accommodated at the end, can move towards one end of the folding filter cover 9, which is close to the driving motor 2, under the action of gravity, then the servo motor drives the linkage rod 12 to reset, at this time, and then starts the electric telescopic rod 8 to drive the isolation rod 7 to take down the tightening rubber band 11 from the surface of the frame 10, and corresponding locking accommodation treatment is performed.
Unlike the first embodiment, the present embodiment can move the flocs inside the frame 10 during the flocs collection to the inside of the folding filter cover 9, so that the present invention has a better storage effect.
Third embodiment:
Fig. 13-14 show that the isolation rod 7 comprises a fixed rod body and a movable rod body movably sleeved on the outer side of the fixed rod body, the fixed rod body is connected with the power end of the electric telescopic rod 8, the bottom end of the fixed rod body is connected with an electromagnet 71, the bottom of the movable rod body is in through connection with an arc-shaped counterweight magnet, and the counterweight magnet and the electromagnet 71 are attracted mutually.
Specifically, when the isolating rod 7 is reset to the surface of the frame 10, the electromagnet 71 is started, the counterweight magnet can be driven to move upwards, and then the movable rod body at the lower part is driven to move upwards, so that the whole structure of the isolating rod 7 is shortened, the isolating rod 7 is better moved to the upper part of the frame 10, and then the electromagnet 71 is closed when the isolating rod moves to the middle of the two right-most tightening rubber bands 11, and the isolating rod 7 can fall to the surface of the frame 10 under the action of the gravity of the counterweight magnet and the movable rod body, so that better reset can be assisted by the isolating rod 7.
Unlike the first embodiment, this embodiment is added with an electromagnet 71, and the arc-shaped portion in the first embodiment is replaced with a counterweight magnet, thus improving the resetting of the spacer 7.
In summary, the application utilizes the tightening rubber band 11, the isolating rod 7, the electric telescopic rod 8 and the folding filter cover 9 to separate and collect flocculates in the flocculation tank 1 in batches, so that the later stirring and mixing promotion flocculation operation can be avoided to break up the settled flocculates, the liquid layer depth of supernatant in the subsequent flocculation tank 1 can be enlarged, meanwhile, the embedded integrated industrial design is adopted, front-end pretreatment modules such as multiple filtration treatment, sterilization treatment and the like are integrated with the water ion desalination membrane, so that a unit integrated modularized device with small occupied area and flux meeting the agricultural park is formed, and modularized purification can be carried out through the serial connection of a head part and a subsystem, thereby meeting the water supply requirements of different agricultural parks.
The present application is not limited to the above-described embodiments, which are adopted in connection with the actual demands, and various changes made by the person skilled in the art without departing from the spirit of the present application are still within the scope of the present application.
Claims (9)
1. The utility model provides a saline and alkaline agricultural water pre-treatment device in underground, including flocculation basin (1), its characterized in that: the outer wall of the flocculation tank (1) is provided with symmetrically arranged stirring and mixing units, the middle positions of the tops of the two sides of the flocculation tank (1) are provided with upright rods, one of the upright rods is provided with a driving motor (2) on the surface, the middle of the two upright rods is provided with a ball screw (21), one end of the ball screw (21) is connected with the output end of the driving motor (2), the surface thread of the ball screw (21) is sheathed with a movable seat, the bottom of the movable seat is connected with an extension hanging rod (22), the bottom of the extension hanging rod (22) is connected with a frame (10), the frame (10) is in sliding contact with the inner wall of the flocculation tank (1), the surface of the frame (10) is sleeved with a plurality of tightening rubber bands (11) which are equidistantly arranged, the surface of the extension hanging rod (22) is provided with an electric telescopic rod (8), the output end of the electric telescopic rod (8) is connected with a vertically arranged isolating rod (7), one side surface of the frame (10) is connected with a folding filter cover (9), the diameter of the tightening rubber bands (11) is smaller than one tenth of the cross section size of the folding filter cover (9), the bottom surface of the frame (10) is in fit contact with the inner bottom wall of the flocculation tank (1), the folding filter cover (9) is made of filter cloth, the mesh number of the filter cloth is not smaller than 300 meshes, the tail end of the folding filter cover (9) is connected with a frame plate made of elastic materials, the section of the folding filter cover (9) is of a wave-shaped design;
the bottom surface mounting of spacer rod (7) has the lug of arranging from top to bottom, and the difference in height between two lugs is greater than the diameter value of the ring of tightening up rubber band (11), below the lug flushes with the bottom surface of spacer rod (7), spacer rod (7) are extending structure, and the bottom of spacer rod (7) under the natural state flushes with the surface of frame (10), and the bottom part of spacer rod (7) is the arc design.
2. The pretreatment device for underground saline-alkali agricultural water according to claim 1, wherein: the projection of the power end of the electric telescopic rod (8) in the vertical direction is positioned in the top surface of the frame (10) when the power end is in a storage state, and the bottom of the isolation rod (7) is positioned in the middle of two tightening rubber bands (11) at the rightmost end in an initial state.
3. The pretreatment device for underground saline-alkali agricultural water according to claim 1, wherein: the stirring mixing unit comprises supporting frames (3) arranged on the outer walls of two sides of a flocculation tank (1), the two supporting frames (3) are located at the front end and the rear end of a driving motor (2), lifting cylinders (5) electrically connected with the driving motor (2) are arranged at the tops of the supporting frames (3), a platform is connected with the output ends of the lifting cylinders (5), a plurality of stirring rods (6) are arranged at the bottoms of the platform through bearings, the stirring rods (6) at the bottoms of each platform are connected through transmission belts, stirring motors (4) are arranged at the tops of the platform, and the output ends of the stirring motors (4) are connected with the end portions of one stirring rod (6).
4. A pre-treatment device for underground saline-alkali agricultural water according to claim 3, wherein: stirring blade rods are arranged on the surfaces of the stirring rods (6), and the shortest distance between the two stirring blade rods on the same axis is larger than the diameter value of the extension hanging rod (22).
5. The pretreatment device for underground saline-alkali agricultural water according to claim 1, wherein: the displacement sensor is arranged in the movable seat and is electrically connected with the electric telescopic rod (8).
6. The pretreatment device for underground saline-alkali agricultural water according to claim 1, wherein: the inside of extension peg (22) is inlayed and is installed symmetrical arrangement's servo motor, and every servo motor's output all is connected with gangbar (12), the tail end of gangbar (12) is connected with the top of frame (10) through the connecting plate, and servo motor and driving motor (2), electric telescopic handle (8) electric connection.
7. The pretreatment device for underground saline-alkali agricultural water according to claim 2, wherein: the isolating rod (7) comprises a fixed rod body and a movable rod body movably sleeved on the outer side of the fixed rod body, the fixed rod body is connected with the power end of the electric telescopic rod (8), the bottom end of the fixed rod body is connected with an electromagnet (71), the bottom of the movable rod body is connected with an arc-shaped counterweight magnet in a penetrating manner, and the counterweight magnet and the electromagnet (71) are attracted with each other.
8. A method for pre-treating underground saline-alkali agricultural water, comprising the pre-treating device for the underground saline-alkali agricultural water according to any one of claims 1 to 7, and the method is characterized by comprising the following working steps:
S1, carrying out lamination rough filtration, and removing particles with the particle size of more than 50 mu m, such as sediment in water, by using 200 mesh lamination;
S2, flocculation treatment, namely mixing a flocculant into the raw water subjected to the S1 treatment in real time through a proportion pump, so that colloid in the raw water is fully flocculated in a flocculation tank (1), the sedimentation time is ensured to be more than 2 hours, and meanwhile, a nano micro-bubble ozone machine is utilized to sterilize supernatant fluid, so that microorganism reproduction is reduced;
s3, transferring the supernatant subjected to flocculation sterilization in the step S2 to a secondary sedimentation tank, and thoroughly precipitating residual flocculate after more than 2 hours of sedimentation time;
s4, sequentially passing the supernatant fluid in the secondary sedimentation tank through quartz sand and activated carbon by a lifting pump, further removing particles in water, and adsorbing colored and flavored organic matters;
S5, the water body treated by the S4 sequentially enters a PP cotton filter core and a parke filter core, impurities with the diameter of more than 1 mu are removed completely, then the groundwater is desalted, and the desalted water body is transferred into a reservoir to be stored as agricultural water to wait for use.
9. The pretreatment method for the underground saline-alkali agricultural water according to claim 8, wherein the step S2 further comprises the following working steps:
S21, firstly, throwing a flocculating agent into a flocculation tank (1), and then starting a lifting cylinder (5) and a stirring motor (4) to drive a stirring rod (6) to descend into the flocculation tank (1) and mix the flocculating agent in the flocculation tank (1) with a water body;
s22, after stirring for a set period of time, lifting the stirring rod (6) by using the lifting cylinder (5) and closing the stirring motor (4), standing for a set period of time at the moment, and waiting for flocculation sedimentation;
S23, after a specified time period, flocs exist in the flocculation tank (1), at the moment, the driving motor (2) is started at a set rotating speed, the moving seat is driven to slowly move in a direction deviating from the driving motor (2), then the frame (10) and the folding filter cover (9) are driven to horizontally move in the flocculation tank (1), and the passing flocs are stored in the folding filter cover (9);
S24, after the movable seat moves to one end of the ball screw (21) deviating from the driving motor (2), the driving motor (2) is closed, the electric telescopic rod (8) is started, the isolation rod (7) is driven to move towards the direction close to the driving motor (2), the rightmost tightening rubber band (11) is driven to be separated from the surface of the frame (10), and the folding filter cover (9) is retracted and locked under the self elastic action;
S25, under the action of the electric telescopic rod (8), driving the tightening rubber band (11) to be close to one end of the folding filter cover (9) which is away from the frame (10), and tightening the end of the flocculate stored in the folding filter cover (9) at the time;
S26, afterwards retracting the electric telescopic rod (8) so that the bottom end of the isolation rod (7) is located between the two tightening rubber bands (11) at the rightmost end again, and restarting the driving motor (2), driving the frame (10) and the folding filter cover (9) to return to one end, close to the driving motor (2), inside the flocculation tank (1), and waiting for the flocculation collection of the next round.
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